Rosiaite Mineral Data

Rosiaite Mineral Data +

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General Rosiaite Information

Chemical Formula:

PbSb+++++2O6

Composition:

Molecular Weight = 546.70 gm

Antimony 44.54 % Sb 59.17 % Sb₂O₅

Lead 37.90 % Pb 40.83 % PbO

Oxygen 17.56 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbSb₂O₆

IMA Status:

Approved IMA 1995 (Dana # Added)

Locality:

Cetine di Cotorniano Mine (Cetine Mine), Rosia, Siena Province, Tuscany, Italy Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 202391

IMA1995-021

PDF 34-912

Rosiaite Image

Images:

Rosiaite Valentinite

Comments: Beige crystals of rosiaite with a colorless valentinite prism.
Location: Tafone Mine, Manciano, Grosseto, Tuscany, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Rosiaite Crystallography

Axial Ratios:

a:c = 1:1.01454

Cell Dimensions:

a = 5.295, c = 5.372, Z = 1; V = 130.44 Den(Calc)= 6.96

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: P 31m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.488(1), 2.648(0.35), 2.109(0.22),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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Basso R , Lucchetti G , Zefiro L , Palenzona A , European Journal of Mineralogy , 8 (1996) p.487-492, Rosiaite, PbSb2O6, a new mineral from the Cetine mine, Siena, Italy, Locality: Cetine mine, Siena, Italy

Physical Properties of Rosiaite

Cleavage:

None

Color:

Colorless, Light yellow.

Density:

6.96

Diaphaniety:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

5.5 - Knife Blade

Luster:

Resinous

Streak:

white

Optical Properties of Rosiaite

Gladstone-Dale:

CI meas= 0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1445,KPDmeas= 0.1445,KC= 0.1448

Optical Data:

Uniaxial (-), e=1.92, w=2.092, bire=0.1720.

Calculated Properties of Rosiaite

Electron Density:

r_electron=5.91 gm/cc
note: r_Rosiaite=6.96 gm/cc.

Fermion Index

Fermion Index = 0.08384
Boson Index = 0.91616

Photoelectric:

PE_Rosiaite= 839.85 barns/electron
U=PE_Rosiaite x r_electron=4,961.17 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Rosiaite is Not Radioactive

Rosiaite Classification

Dana Class:

8.3.11.2 (8)Multiple Oxides with Nb, Ta, and Ti

(8.3)where A (B2O6)

(8.3.11)Dana Group

8.3.11.1 Changbaiite PbNb2O6 R 3m 3m

8.3.11.2 Rosiaite ! PbSb2O6 P 31m 3 2/m

Strunz Class:

IV/D.30-05 IV - Oxides

IV/D - Oxides with metal : oxygen = 1:2 (MO2 and related compounds)

IV/D.30 - Badleyite - Uraninite series, Changbaite

IV/D.30-05 Rosiaite PbSb2O6 P 31m 3 2/m

IV/D.30-10 Changbaiite PbNb2O6 R 3m 3m

Other Rosiaite Information

References:

PHYS. PROP.(Eur. J. Min.,Vol.8,p487-492,1996) OPTIC PROP.(Eur. J. Min.,Vol.8,p487-492,1996)

See Also:

Links to other databases for Rosiaite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST

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Print or Cut-and-Paste your Rosiaite Specimen Label here :

Rosiaite

PbSb+++++2O6
Dana No: 8.3.11.2 Strunz No: IV/D.30-05
Locality:

Notes: